I think the real problem is that Automattic did not plan for another company to get this volume of customers using WordPress, creating a burden on WordPress servers that is not compensated for.
What they should have done is set limits or payment plans above a certain volume of connections or transfers from a person’s or company’s servers.
The problem is to act in this way, suddenly, apparently without foresight and that the possible problems will have to be borne mainly by WP Engine users.
The motherboard can be cleaned with a generous amount of isopropyl alcohol. It cleans slightly corroded areas, displaces water, is not a good conductor of electricity and evaporates easily.